trunnion


trun·nion

noun \ˈtrən-yən\

Definition of TRUNNION

:  a pin or pivot on which something can be rotated or tilted; especially :  either of two opposite gudgeons on which a cannon is swiveled

Origin of TRUNNION

French trognon core, stump
First Known Use: circa 1625

Rhymes with TRUNNION

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